Themelia: the irreducible microstructure of black holes

TL;DR

This paper introduces themelia as fundamental objects in string theory, demonstrating their role in microstate geometries of black holes and proposing a unifying framework connecting various microstructure models.

Contribution

It defines themelia as fundamental supersymmetric objects and shows all known microstate geometries can be constructed from themelia, proposing a new unified perspective.

Findings

All smooth microstate geometries are bound states of themelia.

Constructed the most general themelion with a three-torus isometry.

Demonstrated interpolation between superstrata and super-maze.

Abstract

We argue that the fundamental "atomic objects" in string theory are themelia: extended objects that have 16 supersymmetries locally. We show that all existing smooth horizonless microstate geometries can be seen as bound states of themelia, and we conjecture that all such bound states with suitable KKM charges will give rise to microstate geometries. We also construct the most general themelion with a three-torus isometry and show that it interpolates between superstrata and the super-maze.